Everyday from 8:00 to 17:00 except Fridays from 8:30 to 13:00 - Saturdays Off.
Predominantly Muslim areas like East Jerusalem, Gaza Strip and the West Bank towns remain open on Saturday but are closed all day Friday. Christian owned businesses concentrated in Jerusalem Old City close on Sunday. Standard shopping hours are Monday to Thursday 8:00 - 13:00 and 16:00 - 19:00 or later.
Keep in mind that on February (Shabbat), all Israeli shops, offices and places of entertainment close down. Shabbat starts at sundown on Friday and ends at sundown Saturday.